Which of the Following Statements About On-Package Sampling Is True

Which of the following statements about on-package sampling is true?

A) This can be a very cost effective sampling method,particularly for multiproduct companies.
B) A limitation of this sampling method is that the sample is distributed only to purchasers of the carrier brand.
C) On-package samples can be distributed by attaching them to products not made by the distributing company.
D) The distribution of on-package samples can be broadened by attaching them to multiple brands or to products made by other companies.
E) All of the above statements about on-package sampling are true.